Physics
Scientific paper
May 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979stin...7924934s&link_type=abstract
Fluctuations in microwave background radiation due to secondary ionization of the intergalactic gas in the universe Transl. int
Physics
Background Radiation, Gas Ionization, Intergalactic Media, Microwaves, Radiation Distribution, Universe, Galactic Clusters, Red Shift, Thomson Scattering, Variations
Scientific paper
Secondary heating and ionization of the intergalactic gas at redshifts z approximately 10-30 could lead to the large optical depth of the Universe for Thomson scattering and could smooth the primordial fluctuations formed at z approximately 1500. It is shown that the gas motions connected with the large scale density perturbations at z approximately 10-15 must lead to the generation of secondary fluctuations of microwave background. The contribution of the rich clusters of galaxies and young galaxies to the fluctuations of microwave background is also estimated.
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